Smith



A. NEWTON-SMITH. suuma CHECKING MscHAmM or LOOMS.

APPLICATION FILED MAR- 8. l9l9 I l I l A. NEWTON-SMITH.

SHUTTLE CHECKING MECHANISM OF LOOMS.

APPLICATION FILED MAR. 11. 1919' v 2 SHEETS-SHEET 2.

1,315,608. I PatentedSept. 9,1919.

nn 2 m7 ARTHUR NEWTON-SMITH, or Lonnon, ENGLAND.

SHUTTLE-CHECKING MECHANISM or LOOMS.

Specification of Letters Patent. Patented Sept. 9, 1919- Application filed March 8, 1919. Seriallio. 281,437.

capable of regulation to suit the weight and speed of the shuttle; (b) the resistance offered to the delivery of the shuttle from the shuttle box is maintained at a constant value; and (c) destroy the momentum of the shuttle when moving in one direction'and assist 1n its guldance when moving inthe other direction under the influence of a picker.

In accordance with this invention, the momentum. of the shuttle is destroyed by contact with the swell whichis moved inwardly by the shuttle against a controllable oppo sition consisting of a dash pot and spring.

Further in accordance with this invention the delivery of the shuttle from the shuttle box is effected against resistance due to the action of the spring of the controllable opposition 011 the swell.

Referring now to the accompanying drawin s T ig. 1 is a sectional plan view of a shuttle box; and

Fig. 2 is a similar view of a modification.

Referring to Fig. 1,

1 is the swell which, as usual, comprises a plate of wood or metal pivotally mounted at one end on the back 2 of the shuttle box. The swell 1 is subject to the action of means which cause it to exert a braking action and destroy the momentum of a shuttle entering the shuttle box and a steadying action and assist in the guidance of the shuttle when moving in the other direction under the influence of a picker.

The swell 1 has at one end a vertically disposed pin 3 andthe back 2 has slots 1 at right angles to the faces thereof with which the pin 3 engages. The pivotal mounting described provides for a compound movement of the swell, viz; the ordinary pivoting or angular movement and a movement or a change of position as a whole in re lation to the shuttle 5, and the back 2. 6 is a pin mounted on the rear face of the swell 1 and extending therefrom through a hole in the back 2 to the rear of the shuttle box where it contacts or is connected with a lever 7 pivotally mounted at one end on the'rear face of the back 2. The lever 7 is subject to the pressure of a spring 8 which is also mounted on the rear face of the back 2 and which tends to hold the lever 7 and swell 1' in the'position shown in full lines.

The pressure of the spring Son the lever 7 1S ad ustable, and adjustment is effected by screwing up or down the bolt 9. Regulation of the spring pressure may be effected otherwise.

10 is the rod of a piston 11 contained and movable within a cylinder 12 closed at one end and mounted with" its open end against the rear face of the back 2. The free or outer end of the piston rod 10 is guided by and in a sleeve 15 mounted in the back 2. 14 is a slot formed through the wall of the cylinder 12 and extending longitudinally thereof from the open end.

The lever 7 extends through the slot 14' within the cylinder 12 and its free or outer end enters and engages a hole or recess in the piston rod 10. The piston 11 and cylinder 12 form an air dash pot and the inward movement of the piston is controlled by a needle valve 13.

From the foregoing it will be seen that when a shuttle 5 enters the shuttle box, it engages the swell 1 and causes it to turn about its pivotal mounting 3, 1 and also to move as a whole inwardagainst the conjoint actions of the spring 8 and dash pot 11, 12.- The resistance to movement of the swell 1 offered by the dash pot 11, 12 and by the spring 8 is regulated by the needle valve 13 and bolt 9 respectively, and the greater this resistance the greater is the braking action of the swell 1 on the shuttle '5. The dash pct 11, 12 is only operative when the swell 1 is moving inwardly, but the spring 8 is operative at all times. The pressure of the spring 8 on the swell 1 causes the swell 1 to offer some resistance 'to movement of the shuttle under theinfluence of'a picker. This resistance is reduced as much as is possible and the spring is adjusted so that its pressure is only sufficient to all back the piston 11 within the cylinder 2 and reset the swell 1 and to keep the shuttle steady when moving; under the influence of a picker.

In the modification illustrated in Fig. 2,

the swell 1 is mounted directly on the lever 7 which is pivotally' mounted on a bracket 16 secured to the back 2 and forming also a carrier for the spring 8.

In some constructions in accordance with this invention, the swells may be provided with horizontal projections and thus act as scrceds and when so employed they may be mounted so as to permit of vertical adj ustment.

What I claim is:

1. In a loom, shuttle checking; mechanism comprising; the combination. with a shuttle box and a swell mounted thereon, of; a dash pot and spring both operatively connected to the swell.

2. In a loom, shuttle checking mechanism comprising a shuttle box, a swell carried by said shuttle box, a dash pot, a lever connecting said. dash pot and said swell, and a spring arranged to'bear on the lever.

3. In a loom, shuttle checking mechanism comprising a shuttle box, a swell car- Copics of this patent may be obtained for five cents each, by addressing the (Commissioner ried by said shuttle box, a dash pot, a lever connecting said dash pot and said swell, a spring arranged to bear on the lever, and means for regulating the tension oi? the spring on said lever.

4:. In a loom, shuttle checking mecha-' nism comprising a shuttle box, a lever pivotally mounted on the exterior of said shut tle box, a swell connected with said lever and arranged to be engaged by. the shuttle in the movement of the latter, a dash pot operatively connected with one end of said lover a dash ot o 'Jerativel connected with one end of said lever, a spring carried by said shuttle box and arranged to bearon said lever, and means for regulating the tension of the spring on the lever.

Dated this seventeenth day of February,

ARTHUR NElWTONfiMITH of Iatents,

- Washington, D. G. 

